poster-tube-lid: catch wip, mid-rework, before pointy base redraft

[reprap-play.git] / poster-tube-lid.scad

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 81120a4a74258a76c7528c65894b9dff9d760762..8bc48535b7050db6333aeb5a317def89684d271a 100644 (file)
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -75,6 +75,18 @@ sm_bolt_y_over = 0.5;
 
 sm_closure_cnr = 3.0;
 
+catch_stem_h = 3;
+catch_stem_len = 50;
+catch_stem_th = 3;
+
+catch_knob_dia = 6;
+catch_knob_above_gap = 8;
+catch_pin_height = 7;
+
+catch_stem_below_gap = 1.0;
+catch_stem_beside_gap = 2.0;
+catch_pin_gap = 0.5;
+
 // calculated
 
 TAU = PI*2;
@@ -125,6 +137,34 @@ smc_max_y = smc_bolt_y + sm_bolt_y_over
 smc_cnr_c_x = sm_bolt_shaft/2 - sm_closure_cnr
   + sm_bolt_head_thick/2 + smc_bolt_nut_eff_thick/2;
 
+catch_cr = catch_knob_dia/2 + catch_stem_beside_gap;
+catch_strap_width = sm_main_width;
+catch_stem_end_h = catch_stem_h;
+
+cpp0 = [0,0];
+cpp1 = cpp0 + [0,1] * catch_pin_height;
+cpp2 = cpp1 + [1,0] * (rivet_entry_width - catch_pin_gap);
+cpp4 = cpp0 + [0,-1] * catch_stem_end_h;
+cpp3 = [ cpp2[0], cpp4[1] ];
+cpp5 = [ cpp0[0] - catch_stem_len,
+        0 - (catch_stem_h + catch_cr) ];
+cppB = [ 0.5*(cpp1 + cpp2)[0],
+        cpp1[1] - catch_pin_height - catch_knob_above_gap -
+        0.5 * catch_knob_dia ];
+cpp7 = cppB + [1,-1] * catch_knob_dia/2
+            + [ catch_stem_beside_gap, -catch_stem_below_gap ]
+            + [ 0, -catch_pin_height ]
+            + [-1,1] * catch_cr;
+cpp11 = cpp7 + [1,0] * catch_cr;
+cpp6 = cpp5;
+cpp10 = [ cpp11[0], 0 - catch_cr ];
+cpp8 = cpp10 + [1,0] * catch_cr;
+cpp9 = cpp8 + [0,1] * catch_cr;
+cppC = cpp8 + [1,1] * catch_cr;
+cppA = [ cpp5[0] - catch_cr*2, 0 ];
+cppD = cppC + [0,-1] * catch_strap_width;
+cppE = [ cppA[0], cppD[1] ];
+
 $fs= coarse ? 2.5 : 0.5;
 $fa= coarse ? 5 : 1;
 
@@ -236,10 +276,6 @@ module StrapHoop(){ ////toplevel
   }
 }
 
-module HandlingProfile(){
-//  translate([
-}
-
 module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
   // nom_rad > real_rad
   rotate([0,0, atan2(offset, nom_rad) ]){
@@ -470,6 +506,26 @@ module StrapMount(){ ////toplevel
   }
 }
 
+module CatchCoreProfile(){ ////toplevel
+  difference(){
+    polygon([ cpp4,
+             cpp3,
+             cpp2,
+             cpp1,
+             cpp0,
+             cppA,
+             cppE,
+             cppD,
+             cppC,
+             cpp9,
+             cpp10,
+             cpp11,
+             cpp6,
+             cpp5,
+             ], convexity=10);
+  }
+}
+
 //ProfilesDemo();
 //BayonetCutout();
 //MainProfile();